The name Jude, popularized by the Beatles's 1968 non-album single, "Hey Jude," comes from the Greek, where it is the shortened form of the name of one of Jesus’s brothers, Ἰούδας (Ioúdas), or Judas, mentioned in Mark 6:3 and Matthew 13:55. It is also the name of Judas Iscariot, one of Jesus's disciples (who eventially betrayed him), and the name of the New Testament Book of Jude. This Greek name is the representation of the Hebrew name יהודה‎ (Yəhūḏāh), who was one of Jacob’s sons (Genesis 29:35) and founder of the tribe of Judah, which is ultimately the origin of the ethnonym "Jew" and "Jewish."